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Genetic Analysis Of Development

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Question 1
Free
Short Answer

Please select the best match for each term.
-1)Differentiation
2)Morphogenesis
3)Imaginal discs
4)Clonal selection
5)Pair-rule genes

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Question 2
Free
Multiple Choice

________ cells may differentiate into any cell or tissue type.

Choose correct answer/s
A

Pluripotent

B

Omnipotent

C

Totipotent

D

Hyperpotent

E

Potent

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Question 3
Free
Multiple Choice

Which of the following cell types has the lowest developmental potential?

Choose correct answer/s
A

Oocyte

B

Red blood cell

C

Embryonic stem cell

D

Zygote

E

All have equal developmental potential.

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Question 4
Free
Multiple Choice

The developmental fate of a cell is established by the process termed

Choose correct answer/s
A

development.

B

differentiation.

C

determination.

D

specialization.

E

A,B,and C only

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Question 5
Free
Multiple Choice

________ is the process of cell or tissue change in development.

Choose correct answer/s
A

Transformation

B

Morphogenesis

C

Development

D

Change

E

None of these

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Question 6
Multiple Choice

Which of the following correctly expresses the order of development?

Choose correct answer/s
A
Fertilization,development,maturity
B
Induction,determination,differentiation
C
Induction,differentiation,determination
D
Fertilization,differentiation,determination
E
None of these
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Question 7
Multiple Choice

Which of the following statements is true?

Choose correct answer/s
A
Sex determination in fruit flies depends on the X : autosome ratio.
B
Mammalian sex determination can be influenced by temperature.
C
Mammals experience random Y inactivation.
D
The testis-determining factor gene is X-linked.
E
Dosage compensation occurs in the same way in most animals.
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Question 8
Multiple Choice

The X-inactive specific transcripts gene is designated

Choose correct answer/s
A
SRY.
B
XIC.
C
Xce.
D
MATa.
E
Xist.
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Question 9
Multiple Choice

The best model organism for studying cell fate from fertilized egg through adult is

Choose correct answer/s
A
Arabidopsis thaliana.
B
Caenorhabditis elegans.
C
Drosophila melanogaster.
D
Mus musculus.
E
Saccharomyces cerevisiae.
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Question 10
Multiple Choice

Which of the following is not true of X-inactivation?

Choose correct answer/s
A
It is necessary for dosage compensation.
B
It is the cause of calico color in cats.
C
The mechanism includes transcription of the XIST gene and chromatin remodeling.
D
The XIST RNA is non-coding.
E
The master regulatory gene for X-inactivation is sxl or sex-lethal.
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Question 11
Multiple Choice

In Drosophila,sex determination is carried out by

Choose correct answer/s
A
a cascade of alternative splicing.
B
the SRY gene.
C
histone modification.
D
the DMRT1 gene.
E
All of these
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Question 12
Multiple Choice

Antibody genes

Choose correct answer/s
A
contain both constant and variable regions.
B
are formed by cutting and splicing DNA in B cells during development.
C
are made from two heavy and two light chains,each of which has a variable region.
D
each recognize one antigen and are the only antibody made by their B cell.
E
All of these
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Question 13
Multiple Choice

The X-inactivation center gene is

Choose correct answer/s
A
SRY.
B
XIC.
C
Xce.
D
MATa.
E
Xist.
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Question 14
Multiple Choice

SRY is

Choose correct answer/s
A
a single-region Y gene.
B
a Y-inactivation center gene.
C
the sex-determining region of the Y chromosome.
D
a Y-controlling element.
E
None of these
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Question 15
Multiple Choice

The X-controlling element gene is

Choose correct answer/s
A
SRY.
B
XIC.
C
Xce.
D
MATa.
E
Xist.
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Question 16
Multiple Choice

Homeobox genes

Choose correct answer/s
A
encode proteins with a conserved sequence of amino acids.
B
are important in development.
C
are conserved in multicellular animals.
D
are transcription factors.
E
All of these
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Question 17
Multiple Choice

Mammalian sex determination is controlled by

Choose correct answer/s
A
XIST.
B
SRY.
C
XIC.
D
All of these
E
None of these
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Question 18
Multiple Choice

The central function of X-inactivation is

Choose correct answer/s
A
silencing imprinted genes.
B
enhancing the expression of genes on the chromosome left active.
C
dosage compensation.
D
silencing deleterious alleles.
E
None of these
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Question 19
Multiple Choice

What was the genotype of the mother of the female snail?

Choose correct answer/s
A
SS
B
Ss
C
ss
D
Ss or ss
E
SS or Ss
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Question 20
Multiple Choice

What were the genotypes of the sinistral snails?

Choose correct answer/s
A
ss female and Ss male
B
Ss female and Ss male
C
SS female and ss male
D
Ss female and ss male
E
ss female and SS male
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